LSP: Do not accumulate connections during signal emission

Amends cdeac76df3.

During the execution of updateProject() triggered by a fileListChanged()
emission new connections to the fileListChanged() were added, effectively
making the emit never return and gobbling up all available memory.

Change-Id: I18a1ab9b32c2e797e990449385a5353782211560
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/languageclient/languageclientmanager.cpp

@@ -76,7 +76,7 @@ LanguageClientManager::LanguageClientManager(QObject *parent)
     connect(EditorManager::instance(), &EditorManager::aboutToSave,
             this, &LanguageClientManager::documentWillSave);
     connect(SessionManager::instance(), &SessionManager::projectAdded,
-            this, &LanguageClientManager::updateProject);
+            this, &LanguageClientManager::projectAdded);
     connect(SessionManager::instance(), &SessionManager::projectRemoved,
             this, &LanguageClientManager::projectRemoved);
 }
@@ -523,12 +523,15 @@ void LanguageClientManager::updateProject(ProjectExplorer::Project *project)
             }
         }
     }
+    for (Client *interface : reachableClients())
+        interface->projectOpened(project);
+}
+
+void LanguageClientManager::projectAdded(ProjectExplorer::Project *project)
+{
     connect(project, &ProjectExplorer::Project::fileListChanged, this, [this, project]() {
         updateProject(project);
     });
-
-    for (Client *interface : reachableClients())
-        interface->projectOpened(project);
 }
 
 void LanguageClientManager::projectRemoved(ProjectExplorer::Project *project)

src/plugins/languageclient/languageclientmanager.h

@@ -109,6 +109,7 @@ private:
     void documentWillSave(Core::IDocument *document);
 
     void updateProject(ProjectExplorer::Project *project);
+    void projectAdded(ProjectExplorer::Project *project);
     void projectRemoved(ProjectExplorer::Project *project);
 
     QVector<Client *> reachableClients();